After a "Run Cleaner" cleaning, my options in Firefox restored. Is there any way back to my "library" of bookmarks?!
Welcome to the forums Tolben
This should not be doing that.
What version of Firefox are you using?
Also, what OS are you using? (ex, XP home, W98, W95, ect..)
I had a similar problem a couple of weeks back, it was straight after I updated Firefox to 1.5.0.9 and I'm pretty certain thats what caused it. Thankfully I use FEBE so had backups.
If you're quick you may still get your bookmarks back as they are backed up by Firefox itself, though you have to restore the backup before its overwritten by a newer backup. Have a read here: http://kb.mozillazine.org/Lost_bookmarks
EDIT: Unfortunately, looking at the date of your post, I suspect it may be too late